GH1220 Hall Switch

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琬均暴
4 years ago
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1 Unipolar Hall Switch - Medium Sensitivity Product Description The DH220 is a unipolar h all switch designed in CMOS technology. The IC internally includes a voltage regulator, Hall sensor with dynamic offset cancellation system, Schmitt trigger and an open-drain output driver. While the magnetic flux density(b) is larger than operate point(bop),the output will be turned on(low),the output is held until the magnetic flux density(b) is lower than release point(brp),then turn off. It has wide operating voltage range and extended choice of temperature range, it is quite suitable for use in automotive, industrial and consumer applications. Features 3.5V to 24V DC Operation Voltage CMOS Technology Chopper-stablilized amplifier stage Open Drain Output 25mA Output Sink Current Operating Temperature: 40~ +125 Lead Free Package: SIP-3L and SC59 (Commonly known as TO-92S and SOT-23-3L in Asia) Lead Free Finish/RoHS Compliant Application Rotor Position Sensing Current Switch Encoder RPM Detection Proximity detection 3.5~24V C VDD DH220 R L GND Page 1-7

2 Pin Description Table 1-1 Pin definition and description for SIP-3L(TO-92S) PIN # NAME P/I/O FUNCTION DESCRIPTION 1 VDD P Input Power Supply 2 GND P Ground 3 O Output Stage of Open Drain Table 1-2 Pin definition and description for SC59(SOT-23-3L) PIN # NAME P/I/O FUNCTION DESCRIPTION 1 VDD P Input Power Supply 2 3 O Output Stage of Open Drain GND P Ground Pin Configuration (Top View) Page 2-7

3 (Note 1) Absolute Maximum Rating DH220 SYMBOL PARAMETER RATING VDD Supply Voltage +28VDC Vout (off) Voltage externally applied to +28VDC max, OFF condition only output -0.5 V min., OFF or ON condition Io (sink) Output ON Current 50 ma PD Power Dissipation 450mW(SIP-3L);230mW(SC59) Top Operation Temperature Range -40 to +125 Tst Storage Temperature Range -65 to +150 B Magnetic Flux No limit. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Electrical Characteristics (TA = 25 ) SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VDD Supply Voltage Operating V V O (SAT) Output Saturation Voltage VDD = 12V, ON, Io = 10mA 300 mv IDD Supply Current VDD =3.5~24V, OFF ma I LE Output Leakage Current (Leakage into sensor output) VDD = 12V, ON, Io = 20mA Released 500 mv 10 μa Tr Output Switching Rise Time RL=820Ω, CL=20pF 0.45 μs Tf Time Fall Time RL=820Ω, CL=20pF 0.45 μs IF SW Maximum Switching Frequency 10 KHz Magnetic Characteristics (TA = 25, VDD=12V) SYMBOL PARAMETER MIN. TYP. MAX. UNIT Bop Operation Point Gauss Brp Release Point Gauss Bhy Hysteresis Gauss Page 3-7

4 Functional Block Diagram VDD Regulator Hall plate Amp 2 GND Figure 1. Function Block Diagram of GH1220 Operating Characteristics Output S N Marking side SIP-3L(TO-92S) Marking side S N SC59(SOT-23-3L) ( Output Voltage ) Turn off V SAT 0 ( off -state ) V dd B hy Turn on (on-state ) B rp B op ( Magnetic flux density B ) The SC59 package is south pole active;the SIP-3L package is north pole active; Removing the magnetic field (B=0)switches the output high. Table 2: Switching Function Parameter Magnetic Field (B) (SIP-3L/TO-92S) (SC59/SOT23-3) South Pole B>BOP Low High Null or Weak Magnetic Field B=0 or B<BRP High High North Pole B>BOP High Low Page 4-7

5 Typical Characteristics Magnetic parameter(gs) BOP,VDD=3.5V BRP,VDD=3.5V BOP,VDD=24V BRP,VDD=24V Magnetic parameter vs Temp Ta( ) Magnetic parameter(gs) BOP_25 BRP_25 BOP_125 BRP_125 Magnetic parameter vs VDD Figure 3-1. Magnetic parameters Vs. Ta Figure 3-2. Magnetic parameters VS VDD VDSon(V) VDSon vs Ta VDD=3.5V VDD=12V VDD=24V 0.00 Ta( ) Figure 3-3. VDSon Vs. Ta VDSon(V) VDSon vs VDD Figure 3-4. VDSon Vs. VDD IDD(mA) IDD vs Ta 3.5V 12V 24V 0.0 Ta( ) Figure 3-5. IDD Vs. Ta IDD(mA) IDD vs VDD Figure 3-6. IDD Vs. VDD IOFF(uA) IOFF vs Ta VDD=3.5V VDD=12V VDD=24V 0.00 Ta( ) Figure 3-7. IOFF Vs. Ta IOFF(uA) IOFF vs VDD Figure 3-8. IOFF Vs. VDD Page 5-7

6 Marking Information Page 6-7

Microsoft Word - LR1122B-B.doc

Microsoft Word - LR1122B-B.doc UNISONIC TECHNOLOGIES CO., LTD LOW NOISE ma LDO REGULATOR DESCRIPTION The UTC is a typical LDO (linear regulator) with the features of High output voltage accuracy, low supply current, low ON-resistance,